std::getenv

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Defined in header <cstdlib>
​const char *getenv( const char *env_var );​

Searches for an environmental variable with name env_var in the host-specified environment list and returns information associated with it. The set of environmental variables and methods of altering it are implementation-defined.

Parameters

env_var

-

null-terminated character string identifying the name of the environmental variable to look for

Return value

character string identifying the value of the environmental variable or ​NULL​ if such variable is not found.

Example

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